NVIDIA has taken the wraps off a new system on a chip called the Tegra K1, aimed at mobile devices after going a little wacky with their viral tease for the announcement. NVIDIA live blogged their own event and CNET has details from the announcement, while The Tech Report and Techgage have previews of the new technology. One of the bragging rights for the Tegra K1 is its ability to handle Epic's upcoming Unreal 4 engine, and this trailer offers a look at the engine running on the new SOC, which Epic's Tim Sweeney says blurs the line between desktop end mobile devices in a way he didn't expect for another three or four years.